A Multi-mode Direct Conversion Receiver for Joint Communication and Radar Sensing

This paper presents a reconfigurable direct conversion receiver in 22 nm FDSOI technology with 25 GHz center frequency, implemented for Joint Communication and Radar Sensing (JC&S) applications. The receiver employs a multi-mode 2-stage cascaded common source Low Noise Amplifier (LNA) and a multi-mode Gilbert cell down-conversion mixer. The receiver can be switched between radar mode and communication mode delivering more linearity in radar mode and higher gain in communication mode. In the communication mode, the receiver consumes a power of 22.4 mW while delivering an overall gain of 24.5 dB and an iP <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1dB</inf> of -28 dBm excluding the baseband buffer. In the radar mode, the receiver consumes a maximum DC power of 11.63 m W delivering a maximum receiver gain of 14.8 dB and an iP <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1dB</inf> of -20 dBm at 25 GHz. The receiver consumes an area of 0.74 mm 2 including pads and a core area of 0.15mm 2 .